/*****************************************************************************
- * subtitles.c
+ * subtitles.c : subtitles detection
*****************************************************************************
- * Copyright (C) 2003-2004 VideoLAN
+ * Copyright (C) 2003-2009 the VideoLAN team
* $Id$
*
* Authors: Derk-Jan Hartman <hartman at videolan.org>
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/**
* This file contains functions to dectect subtitle files.
*/
-#include <stdlib.h>
-#include <vlc/vlc.h>
-#include <vlc/input.h>
-
-#ifdef HAVE_DIRENT_H
-# include <dirent.h>
-#else
-# include "../extras/dirent.h"
+#ifdef HAVE_CONFIG_H
+# include "config.h"
#endif
-#include <ctype.h>
+#include <vlc_common.h>
+#include <vlc_fs.h>
+#include <vlc_url.h>
-/**
- * What's between a directory and a filename?
- */
-#if defined( WIN32 )
- #define DIRECTORY_SEPARATOR '\\'
-#else
- #define DIRECTORY_SEPARATOR '/'
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
#endif
+#include <sys/stat.h>
+
+#include <ctype.h> /* isalnum */
+
+#include "input_internal.h"
+
/**
* We are not going to autodetect more subtitle files than this.
*/
#define MAX_SUBTITLE_FILES 128
-
/**
- * The possible extentions for subtitle files we support
+ * The possible extensions for subtitle files we support
*/
-static const char * sub_exts[] = { "utf", "utf8", "utf-8", "sub", "srt", "smi", "txt", "ssa", "idx", NULL};
-/* extensions from unsupported types */
-/* rt, aqt, jss, js, ass */
-
-static void strcpy_trim( char *d, char *s )
+static const char const sub_exts[][6] = {
+ "idx", "sub", "srt",
+ "ssa", "ass", "smi",
+ "utf", "utf8", "utf-8",
+ "txt", "rt", "aqt",
+ "usf", "jss", "cdg",
+ "psb", "mpsub","mpl2",
+ "pjs", "dks",
+ ""
+};
+
+static void strcpy_trim( char *d, const char *s )
{
/* skip leading whitespace */
while( *s && !isalnum(*s) )
*d = tolower(*s);
s++; d++;
}
- if (*s == 0) break;
+ if( *s == 0 ) break;
/* trim excess whitespace */
while( *s && !isalnum(*s) )
{
*d = 0;
}
-static void strcpy_strip_ext( char *d, char *s )
+static void strcpy_strip_ext( char *d, const char *s )
{
- char *tmp = strrchr(s, '.');
- if( !tmp ) {
+ const char *tmp = strrchr(s, '.');
+ if( !tmp )
+ {
strcpy(d, s);
return;
}
else
- {
- strncpy(d, s, tmp - s);
- d[tmp - s] = 0;
- }
+ strlcpy(d, s, tmp - s + 1 );
while( *d )
{
*d = tolower(*d);
}
}
-static void strcpy_get_ext( char *d, char *s )
+static void strcpy_get_ext( char *d, const char *s )
{
- char *tmp = strrchr(s, '.');
+ const char *tmp = strrchr(s, '.');
if( !tmp )
- {
strcpy(d, "");
- return;
- } else strcpy( d, tmp + 1 );
+ else
+ strcpy( d, tmp + 1 );
}
-static int whiteonly( char *s )
+static int whiteonly( const char *s )
{
- while ( *s )
- {
- if( isalnum( *s ) ) return 0;
+ while( *s )
+ {
+ if( isalnum( *s ) )
+ return 0;
s++;
- }
- return 1;
+ }
+ return 1;
}
-typedef struct _subfn
+enum
+{
+ SUB_PRIORITY_NONE = 0,
+ SUB_PRIORITY_MATCH_NONE = 1,
+ SUB_PRIORITY_MATCH_RIGHT = 2,
+ SUB_PRIORITY_MATCH_LEFT = 3,
+ SUB_PRIORITY_MATCH_ALL = 4,
+};
+typedef struct
{
int priority;
char *psz_fname;
char *psz_ext;
-} subfn;
+} vlc_subfn_t;
static int compare_sub_priority( const void *a, const void *b )
{
- if (((subfn*)a)->priority > ((subfn*)b)->priority)
- {
+ const vlc_subfn_t *p0 = a;
+ const vlc_subfn_t *p1 = b;
+
+ if( p0->priority > p1->priority )
return -1;
- }
- if (((subfn*)a)->priority < ((subfn*)b)->priority)
- {
+ if( p0->priority < p1->priority )
return 1;
- }
#ifndef UNDER_CE
- return strcoll(((subfn*)a)->psz_fname, ((subfn*)b)->psz_fname);
+ return strcoll( p0->psz_fname, p1->psz_fname);
#else
- return strcmp(((subfn*)a)->psz_fname, ((subfn*)b)->psz_fname);
+ return strcmp( p0->psz_fname, p1->psz_fname);
#endif
}
+/*
+ * Check if a file ends with a subtitle extension
+ */
+int subtitles_Filter( const char *psz_dir_content )
+{
+ const char *tmp = strrchr( psz_dir_content, '.');
+
+ if( !tmp )
+ return 0;
+ tmp++;
+
+ for( int i = 0; sub_exts[i][0]; i++ )
+ if( strcasecmp( sub_exts[i], tmp ) == 0 )
+ return 1;
+ return 0;
+}
+
+
/**
* Convert a list of paths separated by ',' to a char**
*/
-static char **paths_to_list( char *psz_dir, char *psz_path )
+static char **paths_to_list( const char *psz_dir, char *psz_path )
{
unsigned int i, k, i_nb_subdirs;
char **subdirs; /* list of subdirectories to look in */
-
- i_nb_subdirs = 1;
- for( k = 0; k < strlen( psz_path ); k++ )
+ char *psz_parser = psz_path;
+
+ if( !psz_dir || !psz_path )
+ return NULL;
+
+ for( k = 0, i_nb_subdirs = 1; psz_path[k] != '\0'; k++ )
{
if( psz_path[k] == ',' )
- {
i_nb_subdirs++;
- }
}
-
- if( i_nb_subdirs > 0 )
+
+ subdirs = calloc( i_nb_subdirs + 1, sizeof(char*) );
+ if( !subdirs )
+ return NULL;
+
+ for( i = 0; psz_parser && *psz_parser != '\0' ; )
{
- char *psz_parser, *psz_temp;
-
- subdirs = (char**)malloc( sizeof(char*) * ( i_nb_subdirs + 1 ) );
- memset( subdirs, 0, sizeof(char*) * ( i_nb_subdirs + 1 ) );
- i = 0;
- psz_parser = psz_path;
- while( psz_parser && *psz_parser )
+ char *psz_subdir = psz_parser;
+ psz_parser = strchr( psz_subdir, ',' );
+ if( psz_parser )
{
- char *psz_subdir;
- psz_subdir = psz_parser;
- psz_parser = strchr( psz_subdir, ',' );
- if( psz_parser )
- {
- *psz_parser = '\0';
+ *psz_parser++ = '\0';
+ while( *psz_parser == ' ' )
psz_parser++;
- while( *psz_parser == ' ' )
- {
- psz_parser++;
- }
- }
- if( strlen( psz_subdir ) > 0 )
- {
- psz_temp = (char *)malloc( strlen(psz_dir)
- + strlen(psz_subdir) + 2 );
- if( psz_temp )
- {
- sprintf( psz_temp, "%s%s%c",
- psz_subdir[0] == '.' ? psz_dir : "",
- psz_subdir,
- psz_subdir[strlen(psz_subdir) - 1] ==
- DIRECTORY_SEPARATOR ? '\0' : DIRECTORY_SEPARATOR );
- subdirs[i] = psz_temp;
- i++;
- }
- }
}
- subdirs[i] = NULL;
- }
- else
- {
- subdirs = NULL;
+ if( *psz_subdir == '\0' )
+ continue;
+
+ if( asprintf( &subdirs[i++], "%s%s",
+ psz_subdir[0] == '.' ? psz_dir : "",
+ psz_subdir ) == -1 )
+ break;
}
+ subdirs[i] = NULL;
+
return subdirs;
}
+
/**
* Detect subtitle files.
*
- * When called this function will split up the psz_fname string into a
+ * When called this function will split up the psz_name string into a
* directory, filename and extension. It then opens the directory
* in which the file resides and tries to find possible matches of
* subtitles files.
* \ingroup Demux
* \param p_this the calling \ref input_thread_t
* \param psz_path a list of subdirectories (separated by a ',') to look in.
- * \param psz_fname the complete filename to base the search on.
+ * \param psz_name the complete filename to base the search on.
* \return a NULL terminated array of filenames with detected possible subtitles.
* The array contains max MAX_SUBTITLE_FILES items and you need to free it after use.
*/
char **subtitles_Detect( input_thread_t *p_this, char *psz_path,
- char *psz_fname )
+ const char *psz_name_org )
{
- /* variables to be used for derivatives of psz_fname */
- char *f_dir, *f_fname, *f_fname_noext, *f_fname_trim, *tmp;
- /* variables to be used for derivatives FILE *f */
- char *tmp_fname_noext, *tmp_fname_trim, *tmp_fname_ext, *tmpresult;
- vlc_value_t fuzzy;
- int len, i, j, i_sub_count, i_result2;
- subfn *result; /* unsorted results */
- char **result2; /* sorted results */
- char **tmp_subdirs, **subdirs; /* list of subdirectories to look in */
-
- FILE *f;
- DIR *d;
- struct dirent *de;
+ int i_fuzzy;
+ int j, i_result2, i_sub_count, i_fname_len;
+ char *f_fname_noext = NULL, *f_fname_trim = NULL;
- if( !strncmp( psz_fname, "file://", 7 ) )
- {
- psz_fname += 7;
- }
-
- i_sub_count = 0;
- len = strlen( psz_fname ) > 256 ? strlen( psz_fname ) : 256;
-
- f_dir = (char*)malloc(len);
- f_fname = (char*)malloc(len);
- f_fname_noext = (char*)malloc(len);
- f_fname_trim = (char*)malloc(len);
+ char **subdirs; /* list of subdirectories to look in */
- tmp_fname_noext = (char*)malloc(len);
- tmp_fname_trim = (char*)malloc(len);
- tmp_fname_ext = (char*)malloc(len);
+ vlc_subfn_t *result = NULL; /* unsorted results */
+ char **result2; /* sorted results */
- tmpresult = (char*)malloc(len);
+ if( !psz_name_org )
+ return NULL;
- result = (subfn*)malloc( sizeof(subfn) * MAX_SUBTITLE_FILES );
- memset( result, 0, sizeof(subfn) * MAX_SUBTITLE_FILES );
+ char *psz_fname = make_path( psz_name_org );
+ if( !psz_fname )
+ return NULL;
/* extract filename & dirname from psz_fname */
- tmp = strrchr( psz_fname, DIRECTORY_SEPARATOR );
- if( tmp )
+ char *f_dir = strdup( psz_fname );
+ if( f_dir == NULL )
{
- int pos;
- strncpy( f_fname, tmp + 1, len - 1 );
- f_fname[len - 1] = 0;
- pos = tmp - psz_fname + 1;
- strncpy( f_dir, psz_fname, __MIN(pos,len-1) );
- f_dir[__MIN(pos,len-1)] = 0;
+ free( psz_fname );
+ return NULL;
}
- else
+
+ char *f_fname = strrchr( f_dir, DIR_SEP_CHAR );
+ if( !f_fname )
+ {
+ free( f_dir );
+ free( psz_fname );
+ return NULL;
+ }
+ *(f_fname++) = 0; /* skip dir separator */
+
+ i_fname_len = strlen( f_fname );
+
+ f_fname_noext = malloc(i_fname_len + 1);
+ f_fname_trim = malloc(i_fname_len + 1 );
+ if( !f_fname_noext || !f_fname_trim )
{
- strncpy( f_fname, psz_fname, len - 1 );
- f_fname[len - 1] = 0;
- strcpy( f_dir, "" );
+ free( f_dir );
+ free( f_fname_noext );
+ free( f_fname_trim );
+ free( psz_fname );
+ return NULL;
}
strcpy_strip_ext( f_fname_noext, f_fname );
strcpy_trim( f_fname_trim, f_fname_noext );
- var_Get( p_this, "sub-autodetect-fuzzy", &fuzzy );
- tmp_subdirs = paths_to_list( f_dir, psz_path );
- subdirs = tmp_subdirs;
+ i_fuzzy = var_GetInteger( p_this, "sub-autodetect-fuzzy" );
- for( j = -1; j == -1 || ( j >= 0 && subdirs != NULL && *subdirs != NULL );
- j++)
+ result = calloc( MAX_SUBTITLE_FILES+1, sizeof(vlc_subfn_t) ); /* We check it later (simplify code) */
+ subdirs = paths_to_list( f_dir, psz_path );
+ for( j = -1, i_sub_count = 0; (j == -1) || ( j >= 0 && subdirs != NULL && subdirs[j] != NULL ); j++ )
{
- d = opendir( j < 0 ? f_dir : *subdirs );
- if( d )
+ const char *psz_dir = (j < 0) ? f_dir : subdirs[j];
+ if( psz_dir == NULL || ( j >= 0 && !strcmp( psz_dir, f_dir ) ) )
+ continue;
+
+ /* parse psz_src dir */
+ DIR *dir = vlc_opendir( psz_dir );
+ if( dir == NULL )
+ continue;
+
+ msg_Dbg( p_this, "looking for a subtitle file in %s", psz_dir );
+
+ char *psz_name;
+ while( (psz_name = vlc_readdir( dir )) && i_sub_count < MAX_SUBTITLE_FILES )
{
- int b_found;
- msg_Dbg( p_this, "looking for a subtitle file in %s",
- j < 0 ? f_dir : *subdirs );
- while( ( de = readdir( d ) ) )
+ if( psz_name[0] == '.' || !subtitles_Filter( psz_name ) )
{
- /* retrieve various parts of the filename */
- strcpy_strip_ext( tmp_fname_noext, de->d_name );
- strcpy_get_ext( tmp_fname_ext, de->d_name );
- strcpy_trim( tmp_fname_trim, tmp_fname_noext );
-
- /* does it end with a subtitle extension? */
- b_found = 0;
- for( i = 0; sub_exts[i]; i++ )
+ free( psz_name );
+ continue;
+ }
+
+ char tmp_fname_noext[strlen( psz_name ) + 1];
+ char tmp_fname_trim[strlen( psz_name ) + 1];
+ char tmp_fname_ext[strlen( psz_name ) + 1];
+ char *tmp;
+
+ int i_prio;
+
+ /* retrieve various parts of the filename */
+ strcpy_strip_ext( tmp_fname_noext, psz_name );
+ strcpy_get_ext( tmp_fname_ext, psz_name );
+ strcpy_trim( tmp_fname_trim, tmp_fname_noext );
+
+ i_prio = SUB_PRIORITY_NONE;
+ if( i_prio == SUB_PRIORITY_NONE && !strcmp( tmp_fname_trim, f_fname_trim ) )
+ {
+ /* matches the movie name exactly */
+ i_prio = SUB_PRIORITY_MATCH_ALL;
+ }
+ if( i_prio == SUB_PRIORITY_NONE &&
+ ( tmp = strstr( tmp_fname_trim, f_fname_trim ) ) )
+ {
+ /* contains the movie name */
+ tmp += strlen( f_fname_trim );
+ if( whiteonly( tmp ) )
+ {
+ /* chars in front of the movie name */
+ i_prio = SUB_PRIORITY_MATCH_RIGHT;
+ }
+ else
{
- if( strcmp( sub_exts[i], tmp_fname_ext ) == 0 )
- {
- b_found = 1;
- msg_Dbg( p_this, "found a possible subtitle: %s",
- de->d_name );
- break;
- }
+ /* chars after (and possibly in front of)
+ * the movie name */
+ i_prio = SUB_PRIORITY_MATCH_LEFT;
+ }
+ }
+ if( i_prio == SUB_PRIORITY_NONE &&
+ j == 0 )
+ {
+ /* doesn't contain the movie name, prefer files in f_dir over subdirs */
+ i_prio = SUB_PRIORITY_MATCH_NONE;
+ }
+ if( i_prio >= i_fuzzy )
+ {
+ char psz_path[strlen( psz_dir ) + strlen( psz_name ) + 2];
+ struct stat st;
+
+ sprintf( psz_path, "%s"DIR_SEP"%s", psz_dir, psz_name );
+ if( !strcmp( psz_path, psz_fname ) )
+ {
+ free( psz_name );
+ continue;
}
- /* we have a (likely) subtitle file */
- if( b_found )
+ if( !vlc_stat( psz_path, &st ) && S_ISREG( st.st_mode ) && result )
{
- int i_prio = 0;
- if( !i_prio && !strcmp( tmp_fname_trim, f_fname_trim ) )
- {
- /* matches the movie name exactly */
- i_prio = 4;
- }
- if( !i_prio &&
- ( tmp = strstr( tmp_fname_trim, f_fname_trim ) ) )
- {
- /* contains the movie name */
- tmp += strlen( f_fname_trim );
- if( whiteonly( tmp ) )
- {
- /* chars in front of the movie name */
- i_prio = 2;
- }
- else
- {
- /* chars after (and possibly in front of)
- * the movie name */
- i_prio = 3;
- }
- }
- if( !i_prio )
- {
- /* doesn't contain the movie name */
- if( j == 0 ) i_prio = 1;
- }
-
- if( i_prio >= fuzzy.i_int )
- {
- sprintf( tmpresult, "%s%s", j == -1 ? f_dir : *subdirs,
- de->d_name );
- msg_Dbg( p_this, "autodetected subtitle: %s with "
- "priority %d", de->d_name, i_prio );
- if( ( f = fopen( tmpresult, "rt" ) ) )
- {
- fclose( f );
- result[i_sub_count].priority = i_prio;
- result[i_sub_count].psz_fname = strdup(tmpresult);
- result[i_sub_count].psz_ext = strdup(tmp_fname_ext);
- i_sub_count++;
- }
- }
+ msg_Dbg( p_this,
+ "autodetected subtitle: %s with priority %d",
+ psz_path, i_prio );
+ result[i_sub_count].priority = i_prio;
+ result[i_sub_count].psz_fname = strdup( psz_path );
+ result[i_sub_count].psz_ext = strdup(tmp_fname_ext);
+ i_sub_count++;
+ }
+ else
+ {
+ msg_Dbg( p_this, "stat failed (autodetecting subtitle: %s with priority %d)",
+ psz_path, i_prio );
}
- if( i_sub_count >= MAX_SUBTITLE_FILES ) break;
}
- closedir( d );
+ free( psz_name );
}
- if( j >= 0 ) free( *subdirs++ );
+ closedir( dir );
+ }
+ if( subdirs )
+ {
+ for( j = 0; subdirs[j]; j++ )
+ free( subdirs[j] );
+ free( subdirs );
}
-
- if( tmp_subdirs ) free( tmp_subdirs );
-
free( f_dir );
- free( f_fname );
- free( f_fname_noext );
free( f_fname_trim );
+ free( f_fname_noext );
+ free( psz_fname );
- free( tmp_fname_noext );
- free( tmp_fname_trim );
- free( tmp_fname_ext );
-
- free( tmpresult );
+ if( !result )
+ return NULL;
- qsort( result, i_sub_count, sizeof( subfn ), compare_sub_priority );
+ qsort( result, i_sub_count, sizeof(vlc_subfn_t), compare_sub_priority );
- result2 = (char**)malloc( sizeof(char*) * ( i_sub_count + 1 ) );
- memset( result2, 0, sizeof(char*) * ( i_sub_count + 1 ) );
- i_result2 = 0;
+ result2 = calloc( i_sub_count + 1, sizeof(char*) );
- for( i = 0; i < i_sub_count; i++ )
+ for( j = 0, i_result2 = 0; j < i_sub_count && result2 != NULL; j++ )
{
- if( result[i].psz_ext && !strcasecmp( result[i].psz_ext, "sub" ) )
+ bool b_reject = false;
+
+ if( !result[j].psz_fname || !result[j].psz_ext ) /* memory out */
+ break;
+
+ if( !strcasecmp( result[j].psz_ext, "sub" ) )
{
- int j;
- for( j = 0; j < i_sub_count; j++ )
+ int i;
+ for( i = 0; i < i_sub_count; i++ )
{
- if( result[j].psz_fname && result[i].psz_fname &&
- !strncasecmp( result[i].psz_fname, result[j].psz_fname, sizeof( result[i].psz_fname) - 4 ) &&
- !strcasecmp( result[j].psz_ext, "idx" ) )
+ if( result[i].psz_fname && result[i].psz_ext &&
+ !strncasecmp( result[j].psz_fname, result[i].psz_fname,
+ strlen( result[j].psz_fname) - 3 ) &&
+ !strcasecmp( result[i].psz_ext, "idx" ) )
break;
-
- }
- if( j >= i_sub_count )
- {
- result2[i_result2] = result[i].psz_fname;
- i_result2++;
}
+ if( i < i_sub_count )
+ b_reject = true;
}
- else
+ else if( !strcasecmp( result[j].psz_ext, "cdg" ) )
{
- result2[i_result2] = result[i].psz_fname;
- i_result2++;
+ if( result[j].priority < SUB_PRIORITY_MATCH_ALL )
+ b_reject = true;
}
+
+ /* */
+ if( !b_reject )
+ result2[i_result2++] = strdup( result[j].psz_fname );
+ }
+
+ for( j = 0; j < i_sub_count; j++ )
+ {
+ free( result[j].psz_fname );
+ free( result[j].psz_ext );
}
- result2[i_result2+1] = NULL;
free( result );
+
return result2;
}
+
projects / vlc / blobdiff